Aged 55 in 1841 (rounded)
Aged 68 in 1851, born Ince

Name:    Thomas Alker
Birth Year:    abt 1783
Death Age:    70
Burial Date:    24 Nov 1853
Burial Parish:    Standish, Lancashire, England
Register Type:    Parish Register
Reference Number:    Pr 3134/1/19

Name:    Thomas Alker
Birth Year:    abt 1777
Death Age:    76
Burial Date:    24 Nov 1853
Burial Parish:    Standish, Lancashire, England
Register Type:    Bishop's Transcript
Reference Number:    Drb/2/197

Aged 55 in 1841
Aged 71 in 1851

Name:    Peggy Riding
Baptism Date:    19 Mar 1780
Parish:    Blackrod, Lancashire, England
Father's name:    Thomas Riding
Mother's name:    Jane Riding
Register Type:    Parish Register
Reference Number:    Pr 2967/1/3

"Peggy daughter of Thomas and Jane Riding of Blackrod was baptised March 19" (no birth date or parents shown)

Bishop's Transcripts shows baptism on 24 March (not the 19th), so perhaps on is the birth date.

Name:    Peggy Riding
Age:    79
Birth Date:    abt 1780
Burial Date:    17 Jun 1859
Burial Place:    Rivington, Lancashire, England
Reference Number:    L79/1/4/2
Archive Roll:    989

In 1828 Over 21 (when married Isaac)
In 1841, aged 35 - Born 1806
In 1851, aged 46 - Born 1805, Adlington
In 1861, aged 46 - Born 1815, Blackrod (reject as error)
In 1871, aged 59 - Born 1812, Adlington
In 1878, aged 74 - Born 1804 (when died)

Name:    Jinney Ryding
Event Type:    Baptism
Birth Date:    8 May 1804
Baptism Date:    4 Jun 1804
Baptism Place:    Wigan, All Saints, Lancashire, England
Mother:    Peggy Ryding

Jinney (Base) Dau'r of Peggy Ryding of Adlington

Lancashire Death indexes for the years: 1878
DODD    Jane    74    Adlington    Preston    ADL/6/73